The JELL-O Pudding Face Mood-Meter analyzes the Twitter and pulls in the tweets that include a frowny and happy-face emoticons. The mood meter smiles or frowns depending on which emoticon is featured in the most tweets. When the frowns start to outnumber the smiles, the red light flashes and Jell-o begins giving away free pudding by reaching out through the @Jell-OMoodMeter Twitter account.

Each free pudding tweet includes a unique URL where the recipient validates their identity back to the Twitter account. I’d be interested in knowing how many people took JELL-O up on their free pudding offering, I’m not seeing a lot of recognition in their streams. 🙁

The campaign is supported by an interactive billboard at the corner of West Broadway and Grand in New York City. Photos and a video of the billboard can be seen at the Denver Egotist.